Find the missing number please

What are correct trigonometric ratios that could be used to determine the length of ln

The spring the owner of a sporting good store decreases the price of winter gloves from $10 to $8 each increases the price of swimming goggles from $8 to $10 without doing the math you think the percent decrease in the price of the gloves the same as the percent increase of the goggles explain why or why not

Typically a point in a three dimensional cartesian coordinate system is represented by which of the following answers in the picture !